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science2
| Question | Answer |
|---|---|
| the ancient Greeks knew of all of the following planets EXCEPT | Uranus |
| the sun produces energy by | nuclear fusion |
| what layer are you looking at an image of the sun | photosphere |
| the solar wind is a stream of electrically charged particles that extend outward from the sun's | corona |
| In a heliocentric system, Earth revolves around | the sun |
| what do all of the inner planets have in common | they all are small and have rocky surfaces |
| aside from Earth, which inner planet once had liquid water on its surface | mars |
| the atmosphere of the gas giant cannot escape into space because | the planets have very strong gravitational pulls |
| what do the first four inner planets have in common | they are about the same size as Earth and are made mainly of iron |
| astronomers predicted the existence and orbit of Neptune based on | Neptune's gravitational effect on the orbit of Uranus |
| the fact each planet's orbit is an ellipse was discovered by | Kepler |
| what shape are the orbits of most comets | long, narrow ellipses |
| meteoroids usually come from | comets or asteroids |
| when a meteoroid enters earth's atmosphere, it produces a streak of light called a(n) | meteor |
| scientists have discovered that life forms on earth exist | in a very wide range of condition |
| which of the inner planets does NOT show evidence of volcanic activity | Mercury |
| Saturn's rings are made up of mostly of | chunks of ice and rock |
| Uranus is different from most other planets because it | rotates on its side |
| Neptune is very similar in size and color to | Uranus |
| which is the smallest terrestrial planet | Mercury |
| true or false earth is thought to be at the center of the solar system in the g-e-o-c-e-n-t-r-i-c | true |
| true or false all of the t-e-r-r-e-s-t-r-I-a-l planets have many moons | false/ gas giants |
| true or false the sun's surface layer is the p-h-o-t-o-s-p-h-e-r-e | true |
| true or false the number of sunspots on the sun varies over a period of about 1-1- y-e-a-r-s | true |
| true or false the first four i-n-n-e-r planets are gas giants | false/ outer |
| true or false the g-a-s g-i-a-n-t-s are small, dense, and have rocky surfaces. | false/ terrestrial |
| true or false the Great Red Spot is a huge storm on S-a-t-u-r-n | false/ Jupiter |
| true or false most comets are found in either the Oort cloud or the a-s-t-e-r-o-i-d b-e-l-t | false/ Kuiper belt |
| true or false a comet or asteroid can break up to form a chunk of rock called a meteroid | true |
| the planets that are closer to the sun than Earth are Venus and ________ | Mercury |
| a meteoroid that hits earth's surface is called a(n) _______ | meteor |
| _________ discovered Jupiter's four largest moons | Galileo |
| energy is transferred from the sun's core toward the convection zone mainly in the form of _____________ | I don't know |
| the sun's ________,which looks like a halo, can usually be seen during a solar eclipse regions of a surface | corona |
| regions on the surface of mars have patterns that appear to have been made by __________ | volcanoes |
| the __________ consists of the sun, nine planets and their moons, and several kinds of smaller objects | solar system |
| mar's atmosphere is mostly _____________ | carbon dioxide |
| Jupiter's Great Red Spot is a(n)_________ larger than Earth | storm |
| _____________ is the only planet that has a lower density than water | Saturn |
Created by:
nailahab
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